Preheat over to 400℉
Line two baking sheets with parchment paper (or foil).
Diced onion and chicken, set both aside
Heat a large skillet over medium-high heat. Add the olive oil, diced onion, and minced garlic. Sauté for about 3 minutes, until the onion is soft and slightly see through.
Add the thawed corn, black beans, shredded chicken, taco seasoning, salsa verde, and water to the skillet. Stir everything together and allow it to simmer for 5-7 minutes or until heated through.
Wrap a stack of soft corn taco shells in a damp paper towel and microwave them for 45 seconds. This will make them easier to fold without breaking.
Lay out 6-8 taco shells on each baking sheet. Spoon the chicken mixture onto one half of each taco shell, then sprinkle 2 tablespoons of shredded cheese on top of the filling.
Fold each shell in half and lightly spray with non-stick cooking spray. Bake in the oven for 12-14 minutes, or until the tacos are golden and crispy.
Once the tacos are done, serve them warm with your favorite toppings like fresh cilantro, avocado, or a dollop of Greek yogurt or sour cream.